How to Make a Poster Coaster

Want to make a poster coaster, well if you do this how you do it. Get some long pieces or poster paper of card board and then stack some books up and them start building. Fold the paper so it has two sides that keep it in the track then you can tape other pieces on the track so you can make loop-to-loops and jumps. Then put a marble at the top of the coaster and let it roll!